Why does your Allium fistulosum have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
Green onions are sensitive to high levels of salts in the soil or fertilizer. Excessive sodium or chloride causes physiological drought, leading to tip burn as salts accumulate at the leaf extremities.
Alliums require consistent moisture to maintain turgor pressure. Rapid cycling between bone-dry soil and saturated conditions causes the delicate leaf tips of Allium fistulosum to desiccate and turn brown.
A lack of potassium prevents proper regulation of stomata and water movement within the plant. In Allium species, this often manifests first as necrotic (brown) lesions or drying on the leaf tips.
High transpiration rates caused by low ambient humidity or intense direct sun can outpace the plant's ability to transport water to the tips. This results in localized tissue death at the furthest points from the roots.
Your plant might also be experiencing one of these issues:
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